Reflection module and camera module including same

Abstract

The present disclosure relates to a reflective module comprising: a reflective member configured to convert an incident light path; a bracket mounted together with the reflective member and configured to rotate about a first rotation axis and a second rotation axis perpendicular to the first rotation axis; a housing accommodating the holder; and a first auxiliary member coupled to the bracket, where the first auxiliary member includes a frame and a plurality of buffer members disposed on the frame, and the frame includes an inclined portion having at least a portion extending obliquely with respect to the first rotation axis or the second rotation axis. The present disclosure also relates to a camera module comprising the reflective module.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority from Korean Patent Application No. 10-2024-0039642 filed on March 22, 2024, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety for all purposes by reference. Technical Field

[0003] The present disclosure relates to a reflective module and a camera module including the reflective module. Background Art

[0004] The camera module may be used in a portable electronic device such as a tablet computer, a personal computer (PC), a laptop computer, or a smartphone.

[0005] The camera module has an auto focus (AF) function and an optical image stabilization (OIS) function, and there is a trend to add a zoom function to the camera module.

[0006] The camera module may implement an autofocus function and a zoom function by moving the lens module along the optical axis, and may implement an optical image stabilization function by moving the lens module or the reflection module in a direction intersecting the optical axis.

[0007] When the camera module implements the above-mentioned functions, interference may occur between components included in the camera module.

[0008] The above information is presented as background information only to assist with an understanding of the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with respect to the present disclosure. Summary of the Invention

[0009] This Summary is provided to introduce a selection of concepts in a concise form that will be further described in the Detailed Description below. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

[0010] In a general aspect, a reflection module includes: a reflection member configured to convert an incident light path; a bracket mounted together with the reflection member and configured to rotate around a first rotation axis and a second rotation axis perpendicular to the first rotation axis; a housing accommodating the bracket; and a first auxiliary member connected to the bracket, wherein the first auxiliary member includes a frame and a plurality of buffer members arranged on the frame, and the frame includes an inclined portion having at least a portion extending obliquely relative to the first rotation axis or the second rotation axis.

[0011] The plurality of buffer members may include a first buffer member disposed on the inclined portion and a second buffer member spaced apart from the first buffer member.

[0012] The second buffer member may be spaced apart from the first buffer member in the second rotation axis direction.

[0013] Each of the first and second buffer members may include a portion facing the case, and at least a portion of the portion facing the case has a curved profile.

[0014] Each of the first and second buffer members may include one or more damping holes passing therethrough in a thickness direction.

[0015] The first buffer member may protrude toward a side surface of the case so that a distance between the case and the first buffer member is closer than a distance between the case and the bracket.

[0016] The second buffer member may protrude toward the bottom surface of the case so that a distance between the case and the second buffer member is closer than a distance between the case and the bracket.

[0017] The bracket may include: a reflective bracket installed with the reflective member and configured to rotate about a first rotation axis; and a rotating bracket supporting the reflective bracket and configured to rotate about a second rotation axis. The first auxiliary member may be coupled to the rotating bracket to surround a portion of the reflective bracket.

[0018] The reflection bracket may include a protrusion extending in the first rotation axis direction, and the first auxiliary member surrounds the protrusion.

[0019] The first auxiliary member may be configured such that at least a portion of the inclined portion faces the protrusion, and a portion of the protrusion facing the first auxiliary member may extend parallel to the inclined portion.

[0020] The first auxiliary member may be coupled to the rotating bracket to be spaced apart from the housing and the reflecting bracket.

[0021] In another general aspect, a camera module includes: a housing; a reflective module disposed in the housing and including a reflective member; a lens module disposed in the housing and including at least one lens; and a first auxiliary member disposed on at least one side of the reflective module and including a frame and a plurality of buffer members disposed on the frame, wherein the frame has an inclined portion for coupling at least one of the plurality of buffer members.

[0022] The reflection module may further include a bracket mounted together with the reflection member and configured to rotate about a first rotation axis and a second rotation axis perpendicular to the first rotation axis. The first auxiliary member may be coupled to the bracket.

[0023] The plurality of buffer members may include a first buffer member disposed on the inclined portion and a second buffer member spaced apart from the first buffer member.

[0024] At least a portion of the plurality of cushioning members may have a curved profile.

[0025] The plurality of buffer members may include one or more damping holes passing therethrough in a thickness direction.

[0026] Other features and aspects will be apparent from the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a perspective view of a camera module according to an embodiment of the present disclosure.

[0028] Figure 2 is a schematic exploded perspective view of a camera module according to an embodiment of the present disclosure.

[0029] Figure 3 is a view illustrating an arrangement relationship of a first lens module, a reflection module, and a second lens module of a camera module according to an embodiment of the present disclosure.

[0030] Figure 4 is an exploded perspective view of a first lens module according to an embodiment of the present disclosure.

[0031] Figure 5 is a perspective view of a reflection module according to an embodiment of the present disclosure.

[0032] Figure 6 is an exploded perspective view of a reflection module according to an embodiment of the present disclosure.

[0033] Figure 7 is an exploded bottom perspective view of a reflection module according to an embodiment of the present disclosure.

[0034] Figure 8 is a perspective view of a first auxiliary member according to an embodiment of the present disclosure.

[0035] Figures 9A to 9C is a view illustrating a reflection bracket rotating about a first rotation axis according to an embodiment of the present disclosure.

[0036] Figures 10A to 10C is a view illustrating that the rotating bracket according to the embodiment of the present disclosure rotates around the second rotation axis.

[0037] Figure 11 is an exploded perspective view of a second lens module according to an embodiment of the present disclosure.

[0038] Figure 12is a bottom perspective view of a second lens module according to an embodiment of the present disclosure.

[0039] Figure 13 is a side view of a reflection module according to an embodiment of the present disclosure.

[0040] Figure 14 is a side view of a reflection module according to another embodiment of the present disclosure.

[0041] Throughout the drawings and detailed description, unless otherwise described, the same reference numerals refer to the same elements. For purposes of clarity, illustration, and convenience, the drawings may not be drawn to scale, and the relative sizes, proportions, and depictions of elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0042] Hereinafter, although examples of the present disclosure will be described in detail with reference to the accompanying drawings, it should be noted that the examples are not limited thereto.

[0043] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices and / or systems described herein. However, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent after understanding the present disclosure. For example, the order of operations described herein is merely an example, and except for operations that must occur in a specific order, it is not limited to the order set forth herein, but can be changed, which will be apparent after understanding the present disclosure. In addition, for the sake of clarity and brevity, descriptions of features that are well known in the art may be omitted.

[0044] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent after understanding the present disclosure.

[0045] Throughout the specification, when an element such as a layer, a region, or a substrate is described as being “on,” “connected to,” or “coupled to” another element, the element may be directly “on,” “connected to,” or “coupled to” the other element, or one or more other elements may be present between the element and the other element. Conversely, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, there are no other elements between the element and the other element.

[0046] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items; similarly, "at least one" includes any one of the associated listed items and any combination of any two or more items.

[0047] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are used only to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, without departing from the teachings of the examples described herein, a first member, first component, first region, first layer, or first portion mentioned in these examples may also be referred to as a second member, second component, second region, second layer, or second portion.

[0048] Spatially relative terms such as "above," "above," "below," and "below" may be used herein for descriptive convenience to describe the relationship of one element relative to another element as shown in the accompanying drawings. In addition to covering the orientations depicted in the accompanying drawings, these spatially relative terms are intended to cover different orientations of the device in use or operation. For example, if the device in the drawings is flipped, an element described as being "above" or "above" relative to another element will be "below" or "below" relative to the other element. Thus, the term "above" covers both orientations of "above" and "below," depending on the spatial orientation of the device. The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein should be interpreted accordingly.

[0049] The terms used herein are only used to describe various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the terms "a," "an," and "the" are intended to include plural forms as well. The terms "include," "comprising," and "having" indicate the presence of the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0050] Due to manufacturing techniques and / or tolerances, the shapes shown in the drawings may vary. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shape that occur during manufacturing.

[0051] It should be noted that herein, use of the word “may” with respect to an example, for example, regarding what an example may include or implement, means that there is at least one example that includes or implements such feature, and all examples are not limited thereto.

[0052] The features of the examples described herein may be combined in various ways that will be apparent after understanding the present disclosure. In addition, although the examples described herein have various configurations, other configurations that will be apparent after understanding the present disclosure are also possible.

[0053] An aspect of the present disclosure is to provide a reflective module having improved structural reliability against external impact and a camera module including the same.

[0054] Figure 1 is a perspective view of a camera module according to an embodiment of the present disclosure.

[0055] Reference Figure 1 The camera module 100 according to an embodiment of the present disclosure can convert the path of incident light at least once. In an embodiment, the camera module 100 can convert the incident light path from a first optical axis direction (X-axis direction) to a second optical axis direction (Z-axis direction). The camera module 100 can be elongated in the second optical axis direction (Z-axis direction).

[0056] Figure 2 is a schematic exploded perspective view of a camera module according to an embodiment of the present disclosure.

[0057] Reference Figure 2 , the camera module 100 according to an embodiment of the present disclosure may include a case 1100 and a housing 1200 forming an exterior thereof, a first lens module 2000 , a reflection module 3000 , a second lens module 4000 , and an image sensor 5000 .

[0058] The housing 1100 may be a box-shaped member having an internal space. For example, the housing 1100 may be a box-shaped member that is elongated in the second optical axis direction (Z-axis direction), and the first lens module 2000, the reflection module 3000, the second lens module 4000, and the image sensor 5000 may be disposed in the housing 1100 substantially in the second optical axis direction (Z-axis direction). Alternatively, unlike what is shown in the drawings, a plurality of housings may be provided, and components may be disposed in the plurality of housings individually or together with other components.

[0059] The housing 1200 may be coupled to the top of the housing 1100 to cover the inner space of the housing 1100. The housing 1200 may serve to protect components disposed in the housing 1100. In addition, the housing 1200 may serve to shield electromagnetic waves, and for this purpose, the housing 1200 may be formed of a metal material.

[0060] The housing 1200 may include an opening 1210, and the first lens module 2000 may be disposed in the opening 1210. Therefore, light reflected from an external object may be incident on the first lens module 2000.

[0061] The first lens module 2000, the reflection module 3000, the second lens module 4000, and the image sensor 5000 may be sequentially disposed along an incident light path in the housing 1100. That is, light reflected from an external object may be incident on the first lens module 2000, may sequentially pass through the reflection module 3000 and the second lens module 4000, and then reach the image sensor 5000.

[0062] The image sensor 5000 may be coupled to one side surface of the housing 1100. The one side surface of the housing 1100 may include an opening 1151, and the image sensor 5000 has an imaging surface and may be coupled to the housing 1100 so that the imaging surface is exposed to the inner space of the housing 1100 through the opening 1151.

[0063] The image sensor 5000 may convert incident light into an electrical signal. The electrical signal generated from the image sensor 5000 may be output as an image through a display of a portable electronic device.

[0064] A filter unit 6000 may also be provided in front of the image sensor 5000. The filter unit 6000 may be used to block light in a specific wavelength region among the light that passes through the second lens module 4000 and is incident on the image sensor 5000. For example, the filter unit 6000 may include an infrared (IR) cut filter to block light in the infrared wavelength region.

[0065] In addition, the board 7000 on which the coil and the like are mounted may be provided in the case 1100 or coupled to the case 1100 at the outside of the case 1100 .

[0066] The housing 1100 may include a through hole in a portion where the board 7000 is provided. The board 7000 may be coupled to the housing 1100 so that one surface of the board 7000 on which the coil or the like is mounted is exposed to the inner space of the housing 1100 through the through hole.

[0067] Figure 3 is a view illustrating an arrangement relationship of a first lens module, a reflection module, and a second lens module of a camera module according to an embodiment of the present disclosure.

[0068] Reference Figure 3, the first lens module 2000 and the reflection module 3000 may be disposed in a first optical axis direction (X-axis direction), and the reflection module 3000 and the second lens module 4000 may be disposed in a second optical axis direction (Z-axis direction).

[0069] This specification describes an embodiment in which the camera module 100 includes the first lens module 2000. However, in another embodiment, the camera module 100 may not include the first lens module 2000.

[0070] The first lens module 2000 or the second lens module 4000 may include one or more lenses that refract incident light.

[0071] The reflection module 3000 may include a reflection member 3100 (see Figure 5 ). For example, the reflective member 3100 may be a prism, and the reflective member 3100 may not necessarily be a prism.

[0072] The reflective member 3100 can convert the incident light path from approximately the first optical axis direction (X-axis direction) to approximately the second optical axis direction (Z-axis direction). In other words, the path of the incident light incident in the first optical axis direction (X-axis direction) can be changed to the second optical axis direction (Z-axis direction) on the reflective surface of the reflective member 3100. The first optical axis (X-axis) and the second optical axis (Z-axis) can intersect each other at the reflective surface of the reflective member 3100, and the intersection of the first optical axis (X-axis) and the second optical axis (Z-axis) can substantially coincide with the center of the reflective surface.

[0073] According to an embodiment of the present disclosure, the camera module 100 may stabilize an optical image by moving the reflection module 3000 , and may adjust a focus by moving the second lens module 4000 .

[0074] Hereinafter, a detailed description is given regarding the first lens module 2000 , the reflection module 3000 , and the second lens module 4000 accommodated in the inner space of the housing 1100 .

[0075] Figure 4 is an exploded perspective view of a first lens module according to an embodiment of the present disclosure.

[0076] Reference Figure 4 The first lens module 2000 may include a first lens barrel 2100 accommodating one or more lenses, a first lens holder 2300 mounted together with the first lens barrel 2100 , and a spacer 2200 disposed between the first lens barrel 2100 and the first lens holder 2300 .

[0077] The first lens barrel 2100 may be disposed in the opening 1210 of the housing 1200. Therefore, light reflected from an external object may be incident on a lens accommodated in the first lens barrel 2100, and the incident light may be incident substantially parallel to the first optical axis (X axis).

[0078] The first lens module 2000 may be disposed in the first optical axis direction (X-axis direction) together with the reflection module 3000. Incident light incident on the first lens module 2000 may pass through the first lens module 2000 and then be incident on the reflection module 3000. To this end, the first lens holder 2300 and the spacer 2200 may each include an opening to allow the incident light to pass therethrough.

[0079] The opening area of ​​the spacer 2200 may be smaller than the opening area of ​​the first lens holder 2300. In addition, the spacer 2200 may include a light blocking portion provided along the periphery of the opening and block unnecessary light.

[0080] In an embodiment, the first lens module 2000 may be coupled to the housing 1100 via a first lens holder 2300. In this case, the first lens module 2000 may be a fixed component that does not move when the camera module 100 performs an optical image stabilization function or an autofocus function. However, in another embodiment, the first lens module 2000 may be coupled to the reflective module 3000 and move together with the reflective module 3000 when the camera module 100 performs an optical image stabilization function.

[0081] Figure 5 is a perspective view of a reflection module according to an embodiment of the present disclosure; Figure 6 is an exploded perspective view of a reflection module according to an embodiment of the present disclosure; and Figure 7 is an exploded bottom perspective view of a reflection module according to an embodiment of the present disclosure.

[0082] The reflection module 3000 may include a reflection member 3100 that converts a path of incident light passing through the first lens module 2000, a reflection bracket 3200 on which the reflection member 3100 is mounted, and a rotation bracket 3300 that supports the reflection bracket 3200. The rotation bracket 3300 may be supported by the housing 1100.

[0083] The reflective member 3100 may be mounted on the reflective bracket 3200 to provide a reflective surface on a mounting surface of the reflective bracket 3200 .

[0084] The reflective bracket 3200 can be moved relative to the rotating bracket 3300 while being installed together with the reflective member 3100. For example, the reflective bracket 3200 can rotate about a first rotation axis (Y axis) relative to the rotating bracket 3300. The first rotation axis (Y axis) can be substantially perpendicular to both the first optical axis (X axis) and the second optical axis (Z axis).

[0085] The first ball group 3430 may be provided between the reflection bracket 3200 and the rotation bracket 3300. The reflection bracket 3200 may be rotatably supported by the rotation bracket 3300 via the first ball group 3430.

[0086] The first ball group 3430 may form a first rotation axis (Y axis), i.e., a rotation axis of the reflector bracket 3200. For example, the first ball group 3430 may include two ball members spaced apart from each other in the first rotation axis direction (Y axis direction). The number of ball members included in the first ball group 3430 may be varied.

[0087] In an embodiment, the first ball group 3430 may be provided between the plurality of first receiving grooves 3220 provided in the reflection bracket 3200 and the plurality of second receiving grooves 3310 provided in the rotation bracket 3300. The number of the first receiving grooves 3220 and the second receiving grooves 3310 may correspond to the number of ball members included in the first ball group 3430.

[0088] The first receiving grooves 3220 and the second receiving grooves 3310 may face each other in the second optical axis direction (Z-axis direction), and the first ball set 3430 may be disposed between the first and second receiving grooves 3220 and 3310 facing each other. The first ball set 3430 may form a first rotation axis (Y-axis) when rotating in situ while different portions thereof are respectively received in the first and second receiving grooves 3220 and 3310. To this end, at least one of the plurality of first receiving grooves 3220 and the plurality of second receiving grooves 3310 may include three inclined surfaces for supporting the ball members included in the first ball set 3430 at at least three points.

[0089] A magnetic material generating a magnetic force (eg, magnetic attraction) may be provided on each of the reflective bracket 3200 and the rotating bracket 3300 for stably supporting the reflective bracket 3200 by the rotating bracket 3300 while inserting the first ball group 3430 therebetween.

[0090] In an embodiment, the first magnetic material 3240 may be provided in the reflective bracket 3200, and the second magnetic material 3340 may be provided at the rotating bracket 3300. For example, the first magnetic material 3240 may be a pulling yoke, and the second magnetic material 3340 may be a pulling magnet.

[0091] The first magnetic material 3240 and the second magnetic material 3340 may face each other in the second optical axis direction (Z-axis direction), and magnetic attraction may act in the second optical axis direction (Z-axis direction) where the first magnetic material 3240 and the second magnetic material 3340 face each other. Therefore, the reflective bracket 3200 may be supported by the rotating bracket 3300 in the second optical axis direction (Z-axis direction).

[0092] The reflective bracket 3200 can be supported by the rotating bracket 3300 while the first ball group 3430 is interposed between the reflective bracket 3200 and the rotating bracket 3300. In this state, the first auxiliary member 3500 can be coupled to the rotating bracket 3300. For example, the first auxiliary member 3500 can be coupled to the rotating bracket 3300 to surround a portion of the reflective bracket 3200, thereby preventing the reflective bracket 3200 from being separated from the rotating bracket 3300. Details of the first auxiliary member 3500 will be provided below.

[0093] The rotating bracket 3300 can move relative to the housing 1100 together with the reflecting bracket 3200 supported by the rotating bracket 3300. For example, the rotating bracket 3300 can rotate around the second rotation axis (X axis) relative to the housing 1100. The second rotation axis (X axis) can be substantially parallel to the first optical axis.

[0094] The second ball group 3400 may be provided between the rotating bracket 3300 and the housing 1100. The rotating bracket 3300 may be rotatably supported by the housing 1100 via the second ball group 3400.

[0095] The second ball set 3400 may include a rotation axis ball 3410 and a plurality of guide balls 3420. The rotation axis ball 3410 may form a second rotation axis (X axis), and the plurality of guide balls 3420 may assist the rotating bracket 3300 in rotating about the second rotation axis (X axis). For example, the plurality of guide balls 3420 may include two ball members spaced apart from the rotation axis ball 3410. The number of ball members included in the guide balls 3420 may vary.

[0096] In an embodiment, the rotating shaft ball 3410 may be disposed between the third receiving groove 3350 provided in the rotating bracket 3300 and the fourth receiving groove 1120 provided in the housing 1100 .

[0097] The third receiving groove 3350 and the fourth receiving groove 1120 may face each other in the first optical axis direction (X-axis direction), and the rotation axis ball 3410 may be disposed between the third receiving groove 3350 and the fourth receiving groove 1120 facing each other. The rotation axis ball 3410 may form a second rotation axis (X-axis) when rotating in situ while different portions thereof are respectively received in the third receiving groove 3350 and the fourth receiving groove 1120. To this end, at least one of the third receiving groove 3350 and the fourth receiving groove 1120 may include three inclined surfaces for supporting the rotation axis ball 3410 at at least three points.

[0098] In addition, in an embodiment, a plurality of guide balls 3420 may be provided between the plurality of first guide grooves 3320 provided in the rotating bracket 3300 and the plurality of second guide grooves 1130 provided in the housing 1100. The number of the first guide grooves 3320 and the second guide grooves 1130 may correspond to the number of the plurality of guide balls 3420.

[0099] The first guide groove 3320 and the second guide groove 1130 may face each other in the first optical axis direction (X-axis direction), and a plurality of guide balls 3420 may be provided between the first guide groove 3320 and the second guide groove 1130 facing each other. The guide balls 3420 may perform a rolling motion while different portions thereof are respectively accommodated in the first guide groove 3320 and the second guide groove 1130 to support the rotation of the rotating bracket 3300. The first guide groove 3320 and the second guide groove 1130 may extend substantially in the rotation direction of the rotating bracket 3300.

[0100] The reflection module 3000 may include a driving unit that generates a driving force for rotating the reflection bracket 3200 and the rotating bracket 3300. The reflection module 3000 may include a first driving unit 3230 that generates a driving force for rotating the reflection bracket 3200 around a first rotation axis (Y axis) and a second driving unit 3330 that generates a driving force for rotating the rotating bracket 3300 around a second rotation axis (X axis).

[0101] The first driving unit 3230 may include a first driving magnet 3231 and a first driving coil 3232. The first driving magnet 3231 and the first driving coil 3232 may face each other in the second optical axis direction (Z-axis direction).

[0102] The first driving magnet 3231 may be provided on the reflective bracket 3200. For example, the reflective bracket 3200 may include an extension portion 3210 provided between the housing 1100 and the rotating bracket 3300, and the first driving magnet 3231 may be provided on the extension portion 3210 of the reflective bracket 3200.

[0103] The first driving coil 3232 may be provided in the housing 1100. For example, the first driving coil 3232 may be mounted on one surface of the board 7000 and coupled to the housing 1100 via the board 7000.

[0104] The first driving magnet 3231 can be magnetized sequentially into a north (N) pole (or south (S) pole), a neutral region, and an S pole (or N pole) in the first optical axis direction (X-axis direction). The first driving coil 3232 can include one or more coils facing the first driving magnet 3231. The first driving magnet 3231 and the first driving coil 3232 can generate a driving force in a direction perpendicular to the direction in which the first driving magnet 3231 and the first driving coil 3232 face each other, and the driving force can rotate the reflection bracket 3200 around the first rotation axis (Y-axis).

[0105] The first driving unit 3230 may include a first position sensor 3233 that detects the position of the first driving magnet 3231. One or more first position sensors 3233 may be provided and may be mounted on one surface of the board 7000 together with the first driving coil 3232 to face the first driving magnet 3231.

[0106] The first position sensor 3233 may be a magnetic sensor that detects a position (movement amount) of the first driving magnet 3231 by detecting a change in magnetic flux. In an embodiment, the first position sensor 3233 may face a neutral region of the first driving magnet 3231 and effectively detect a change in magnetic flux.

[0107] The first drive unit 3230 may include a first magnetic yoke 3234 disposed on the back side of the first drive coil 3232. That is, the first magnetic yoke 3234 may be disposed on a surface of the board 7000 opposite to one surface on which the first drive coil 3232 and the like are mounted. The first magnetic yoke 3234 may be made of a magnetic material and may focus the magnetic flux generated in the first drive magnet 3231. Therefore, the magnetic flux generated in the first drive magnet 3231 may pass through the first drive coil 3232 more strongly.

[0108] The second driving unit 3330 may include a second driving magnet 3331 and a second driving coil 3332. The second driving magnet 3331 and the second driving coil 3332 may face each other in the first optical axis direction (X-axis direction).

[0109] The second driving magnet 3331 may be provided on the rotating bracket 3300. For example, the second driving magnet 3331 may be provided on the bottom surface of the rotating bracket 3300.

[0110] The second driving coil 3332 may be provided in the housing 1100. For example, the second driving coil 3332 may be mounted on one surface of the board 7000 and coupled to the housing 1100 via the board 7000.

[0111] The second driving magnet 3331 may include two magnets magnetized sequentially into an N pole (or S pole), a neutral region, and an S pole (or N pole) approximately in the rotation direction of the rotating bracket 3300. One or more second driving coils 3332 may be provided, and the one or more second driving coils 3332 may face at least one of the magnets included in the second driving magnet 3331. The second driving magnet 3331 and the second driving coil 3332 may generate a driving force in a direction perpendicular to the direction in which the second driving magnet 3331 and the second driving coil 3332 face each other, and the rotating bracket 3300 may rotate about the second rotation axis (X axis) by the driving force.

[0112] The second driving unit 3330 may include a second position sensor 3333 that detects the position of the second driving magnet 3331. One or more second position sensors 3333 may be provided, and the one or more second position sensors 3333 may be mounted on one surface of the board 7000 together with the second driving coil 3332 to face at least one of the magnets included in the second driving magnet 3331.

[0113] The second position sensor 3333 may be a magnetic sensor that detects a change in magnetic flux to detect the position (movement amount) of the second driving magnet 3331. In an embodiment, the second position sensor 3333 may face the neutral region of the second driving magnet 3331 and effectively detect the change in magnetic flux.

[0114] The second driving unit 3330 may include a second yoke 3334 disposed on the back side of the second driving coil 3332. That is, the second yoke 3334 may be disposed on a surface of the board 7000 opposite to one surface on which the second driving coil 3332 and the like are mounted.

[0115] In an embodiment, the second yoke 3334 may be a magnetic material. The second yoke 3334 may focus the magnetic lines of force generated in the second driving magnet 3331. Therefore, the magnetic lines of force generated in the second driving magnet 3331 may pass through the second driving coil 3332 more strongly.

[0116] Furthermore, a magnetic force (e.g., magnetic attraction) can be generated between the second magnetic yoke 3334 and the second driving magnet 3331. For example, the second magnetic yoke 3334 can be attracted in the first optical axis direction (X-axis direction) in which the second magnetic yoke 3334 faces the second driving magnet 3331. That is, the second magnetic yoke 3334 can function as a pulling magnetic yoke, and the rotating bracket 3300 can be supported by the housing 1100 in the first optical axis direction (X-axis direction) by the magnetic force between the second magnetic yoke 3334 and the second driving magnet 3331.

[0117] Figure 8 is a perspective view of a first auxiliary member according to an embodiment of the present disclosure. Figures 9A to 9C is a view illustrating a reflection bracket rotating about a first rotation axis according to an embodiment of the present disclosure. 10A to 10C is a view illustrating that the rotating bracket according to the embodiment of the present disclosure rotates around the second rotation axis.

[0118] According to an embodiment of the present disclosure, the reflection module 3000 may include a first auxiliary member 3500 to adjust a rotation range of the reflection module 3000 and protect components thereof when an external impact is applied thereto.

[0119] The reflective bracket 3200 may be supported by the rotating bracket 3300 while the first ball group 3430 is interposed between the reflective bracket 3200 and the rotating bracket 3300. The rotating bracket 3300 may be supported by the housing 1100 while the second ball group 3400 is interposed between the rotating bracket 3300 and the housing 1100. In this state, the first auxiliary member 3500 may be coupled to the rotating bracket 3300 to surround the reflective bracket 3200.

[0120] The reflector bracket 3200 may include protrusions 3250 on both sides of the first rotation axis direction (Y-axis direction). The protrusions 3250 may extend in the first rotation axis direction (Y-axis direction). The protrusions 3250 may include a first receiving groove 3220, and the first ball group 3430 may be disposed in the first receiving groove 3220.

[0121] The first auxiliary member 3500 may be coupled to the rotating bracket 3300 to surround the protrusion 3250 of the reflecting bracket 3200. The first auxiliary member 3500 may be coupled to the rotating bracket 3300 while having a distance 3600 therefrom so as not to interfere with rotation of the reflecting bracket 3200 relative to the rotating bracket 3300.

[0122] The first auxiliary member 3500 may include a frame 3510 , and first and second buffer members 3520 and 3530 disposed on the frame 3510 .

[0123] The frame 3510 may be made of a material having structural rigidity, such as stainless steel. However, the material of the frame 3510 is not limited thereto. The frame 3510 may be substantially C-shaped, and one end and the other end are respectively coupled to the rotating bracket 3300.

[0124] Referring to the accompanying drawings, the frame 3510 may include an inclined portion 3512 that is cut diagonally to a corner (hereinafter referred to as an upper corner) of the reflector bracket 3200 located on its upper side. In an embodiment, the inclined portion 3512 may extend obliquely relative to the first rotation axis (Y axis) or the second rotation axis (X axis). When an impact is applied to the frame 3510, the inclined portion 3512 can improve the structural rigidity of the frame 3510 by dispersing stress concentrated on the corner.

[0125] The inclined portion 3512 of the frame 3510 may face the protrusion 3250 of the reflector bracket 3200. An upper corner of the protrusion 3250 may be inclined to correspond to the inclined portion 3512. In detail, the protrusion 3250 may face the first buffer member 3520, which will be described below, surrounding the inclined portion 3512, and the first buffer member 3520 may have a surface facing the protrusion 3250 and be inclined like the inclined portion 3512.

[0126] The first and second buffer members 3520, 3530 may be provided on the frame 3510. The first and second buffer members 3520, 3530 may be coupled to corners of the frame 3510. For example, the first buffer member 3520 may be provided at an upper corner (i.e., the inclined portion 3512) of the frame 3510, and the second buffer member 3530 may be provided at a lower corner of the frame 3510. That is, the first and second buffer members 3520, 3530 may be provided on the frame 3510 and spaced apart from each other in the first optical axis direction (the X-axis direction or the second rotation axis direction).

[0127] The first buffer member 3520 or the second buffer member 3530 may completely surround the upper corner or the lower corner of the frame 3510 and protrude toward the corresponding member (e.g., the housing 1100). Therefore, when an external impact is applied thereto, the first buffer member 3520 or the second buffer member 3530 may prevent direct collision between the housing 1100 and the rotating bracket 3300.

[0128] The first buffer member 3520 may form an upper corner of the first auxiliary member 3500 by replacing the inclined portion 3512 of the frame 3510. For example, the first buffer member 3520 may protrude substantially perpendicularly to the inclined portion 3512.

[0129] A distance between the first buffer member 3520 and the housing 1100 in the second optical axis direction (Z-axis direction) may be closer than a distance between the rotating bracket 3300 and the housing 1100 in the second optical axis direction (Z-axis direction).

[0130] The second buffer member 3530 may surround the lower corner of the frame 3510 and protrude toward the bottom surface of the housing 1100. For example, the distance between the second buffer member 3530 and the housing 1100 in the first optical axis direction (X-axis direction) may be closer than the distance between the rotating bracket 3300 and the housing 1100 in the first optical axis direction (X-axis direction). When an impact is applied thereto in the first optical axis direction (X-axis direction), the second buffer member 3530 can prevent direct collision between the rotating bracket 3300 and the housing 1100, which face each other in the first optical axis direction (X-axis direction), and absorb the impact.

[0131] The first buffer member 3520 or the second buffer member 3530 may be made of an elastic material to continuously absorb shocks. However, the material of the first buffer member 3520 or the second buffer member 3530 is not limited thereto.

[0132] The first buffer member 3520 or the second buffer member 3530 may include a curved profile or a curved surface. For example, the first buffer member 3520 or the second buffer member 3530 may have an area facing the corresponding member, and at least a portion of the area may have a curved profile or a curved surface. Thus, the first buffer member 3520 or the second buffer member 3530 can effectively absorb the impact with the corresponding member caused by the rotation operation of the reflective module 3000.

[0133] In addition, the first buffer member 3520 may include a damping hole 3525 extending through the thickness thereof, or the second buffer member 3530 may include a damping hole 3535 extending through the thickness thereof. The damping hole 3525 or 3535 may be formed in a portion of the first buffer member 3520 or the second buffer member 3530 other than the portion surrounding the frame 3510. The damping hole 3525 or 3535 may reduce noise occurring during operation of the reflection module 3000.

[0134] Reference Figures 9A to 9C, the reflective bracket 3200 can rotate around the first rotation axis (Y axis) relative to the rotating bracket 3300. When the reflective bracket 3200 rotates, the distance 3600 between the reflective bracket 3200 and the first auxiliary member 3500 can change. When the reflective bracket 3200 rotates at a predetermined angle or greater, the protrusion 3250 of the reflective bracket 3200 can contact the first buffer member 3520 of the first auxiliary member 3500 facing the protrusion 3250. Therefore, the rotation range of the reflective bracket 3200 can be limited. The reflective bracket 3200 can first contact the first buffer member 3520, thereby preventing a collision between the reflective bracket 3200 and the rotating bracket 3300 as a corresponding member, or reducing the impact of the collision.

[0135] Reference Figures 10A to 10C , the rotating bracket 3300 can rotate around the second rotation axis (X axis) relative to the housing 1100.

[0136] In an embodiment, the maximum rotation angle of the rotating bracket 3300 around the second rotation axis (X axis) can be greater than the maximum rotation angle of the reflecting bracket 3200 around the first rotation axis (Y axis). In other words, the rotating bracket 3300 can rotate while having a larger rotation range than the reflecting bracket 3200.

[0137] Meanwhile, another embodiment of the present disclosure may omit the rotating bracket 3300 of the reflection module 3000 .

[0138] Figure 13 is a side view of a reflection module according to an embodiment of the present disclosure. Figure 14 is a side view of a reflection module according to another embodiment of the present disclosure.

[0139] Reference Figure 13 , the reflection module 3000 according to an embodiment of the present disclosure may include a reflection bracket 3200 on which the reflection member 3100 is mounted and a rotation bracket 3300 supporting the reflection bracket 3200 .

[0140] On the other hand, the reflection module 3000' according to another embodiment of the present disclosure may include a reflection member and a bracket 3200' on which the reflection member is mounted. That is, the reflection module 3000' may omit the rotating bracket 3300.

[0141] In another embodiment of the present disclosure, the first auxiliary member 3500 may be coupled to the bracket 3200 ′. Except that the first auxiliary member 3500 is coupled to the bracket 3200 ′ instead of the rotating bracket 3300 , other features related to the first auxiliary member 3500 may be the same as described above.

[0142] In another embodiment of the present disclosure, the bracket 3200 ′ may rotate relative to the housing 1100 around the first rotation axis (Y axis) or the second rotation axis (X axis).

[0143] Meanwhile, since the rotating bracket 3300 is omitted, according to an embodiment of the present disclosure, components provided at the rotating bracket 3300 in the reflection module 3000 may be provided at the bracket 3200 ′, and some components may have changed positions.

[0144] Figure 11 is an exploded perspective view of a second lens module according to an embodiment of the present disclosure. Figure 12 is a bottom perspective view of a second lens module according to an embodiment of the present disclosure.

[0145] Reference Figure 11 The second lens module 4000 may include a second lens barrel 4100 accommodating one or more lenses and a second lens holder 4200 mounted together with the second lens barrel 4100 .

[0146] The second lens barrel 4100 may include one or more lenses arranged in the second optical axis direction (Z-axis direction) The second lens holder 4200 may be supported by the housing 1100 while being mounted together with the second lens barrel 4100 .

[0147] The third ball group 4600 may be disposed between the second lens holder 4200 and the housing 1100. The second lens holder 4200 may be movably supported by the housing 1100 via the third ball group 4600.

[0148] The third ball group 4600 may include three ball members spaced apart from each other in the second optical axis direction (Z-axis direction). The third ball group 4600 may include three or more ball members, and the number of ball members included in the third ball group 4600 may be changed.

[0149] The three ball members included in the third ball group 4600 may support one side or the other side of the second lens holder 4200. That is, one side and the other side of the second lens holder 4200 may be supported by at least one of the ball members.

[0150] The third ball group 4600 may be disposed between the plurality of third guide grooves 4230 provided in the second lens holder 4200 and the plurality of fourth guide grooves 1140 provided in the housing 1100. The number of the third guide grooves 4230 and the fourth guide grooves 1140 may correspond to the number of ball members included in the third ball group 4600.

[0151] The third guide groove 4230 and the fourth guide groove 1140 may face each other in the first optical axis direction (X-axis direction), and the third ball group 4600 may be disposed between the third guide groove 4230 and the fourth guide groove 1140. The plurality of ball members included in the third ball group 4600 may each perform a rolling motion to support the movement of the second lens holder 4200 while different portions are respectively accommodated in the third guide groove 4230 and the fourth guide groove 1140. The third guide groove 4230 and the fourth guide groove 1140 may each extend substantially in the moving direction of the second lens holder 4200 (i.e., the second optical axis direction (Z-axis direction)).

[0152] A magnetic material that generates a magnetic force (e.g., magnetic attraction) may be provided on each of the second lens holder 4200 and the housing 1100 to stably support the second lens holder 4200 by the housing 1100 while the third ball group 4600 is inserted between the second lens holder 4200 and the housing 1100.

[0153] In an embodiment, the third magnetic material 4510 may be provided on the second lens holder 4200, and the fourth magnetic material 4520 may be provided in the housing 1100. For example, the third magnetic material 4510 may be a pulling magnet, and the fourth magnetic material 4520 may be a pulling yoke.

[0154] The third magnetic material 4510 and the fourth magnetic material 4520 may face each other in the first optical axis direction (X-axis direction). Magnetic attraction may act in the first optical axis direction (X-axis direction), which is the direction in which the third magnetic material 4510 and the fourth magnetic material 4520 face each other. Therefore, the second lens holder 4200 may be supported by the housing 1100 in the first optical axis direction (X-axis direction).

[0155] In order to support the stable movement of the second lens holder 4200, the third magnetic material 4510 may be provided in a support region formed by the third ball group 4600. For example, the third ball group 4600 may include three ball members, and the third magnetic material 4510 may be provided in a triangular support region having the three ball members as its vertices.

[0156] At the same time, when the second lens holder 4200 moves in the second optical axis direction (Z-axis direction), the third ball group 4600 can perform a rolling motion in the second optical axis direction (Z-axis direction), thereby continuously changing the support area formed by the three ball members. In an embodiment, the third magnetic material 4510 can be biased toward one side of the second lens holder 4200 to ensure that the third magnetic material 4510 is continuously located in the support area formed by the third ball group 4600 during the movement of the second lens holder 4200.

[0157] Reference Figure 12 The second lens holder 4200 can have one side supported at two points by two ball members of the third ball group 4600, and the other side supported at one point by one ball member. The third magnetic material 4510 can be biased toward one side of the second lens holder 4200. That is, the distance between the third magnetic material 4510 and one side of the second lens holder 4200 can be smaller than the distance between the third magnetic material 4510 and the other side of the second lens holder 4200. Therefore, even when the second lens holder 4200 moves with a long stroke, the point of application of the magnetic attraction between the third magnetic material 4510 and the fourth magnetic material 4520 can be stably located within the changing support area of ​​the third ball group 4600.

[0158] Meanwhile, the second lens holder 4200 may be supported by the housing 1100 while the third ball group 4600 is interposed between the second lens holder 4200 and the housing 1100. In this state, the second auxiliary member 1700 may be coupled to the second lens holder 4200.

[0159] The second auxiliary member 1700 may be coupled to the housing 1100 to surround both sides of the second lens holder 4200, thereby preventing the second lens holder 4200 from being separated from the housing 1100 due to external impact. Furthermore, the second auxiliary member 1700 may include a buffer member protruding in the second optical axis direction (Z-axis direction), which is the movement direction of the second lens holder 4200. The buffer member may be provided on one surface of the second auxiliary member 1700 facing the housing 1100 and on another surface of the second auxiliary member 1700 facing the second lens holder 4200, thereby adjusting the range of movement of the second lens holder 4200 and absorbing impact.

[0160] The second lens module 4000 may include a third driving unit 4300 generating a driving force to move the second lens holder 4200 .

[0161] The third driving unit 4300 may include a third driving magnet 4310 and a third driving coil 4320. The third driving magnet 4310 and the third driving coil 4320 may face each other in a direction (Y-axis direction) perpendicular to both the first and second optical axes.

[0162] The third driving magnet 4310 may be provided on the second lens holder 4200. For example, the third driving magnet 4310 may include two magnets, and the two magnets may be provided on both surfaces of the second lens holder 4200.

[0163] The third driving coil 4320 may be provided in the housing 1100. For example, the third driving coil 4320 may be mounted on one surface of the board 7000 and coupled to the housing 1100 via the board 7000.

[0164] The third drive magnet 4310 may include two magnets sequentially magnetized into an N pole (or S pole), a neutral region, and an S pole (or N pole) in the direction of movement of the second lens holder 4200. The third drive coil 4320 may include two coils facing the two magnets, respectively. The third drive magnet 4310 and the third drive coil 4320 may generate a driving force in a direction perpendicular to the direction in which the third drive magnet 4310 and the third drive coil 4320 face each other. This driving force allows the second lens holder 4200 to move in the second optical axis direction (Z-axis direction).

[0165] The third driving unit 4300 may include a third position sensor 4330 that detects the position of the third driving magnet 4310. One or more third position sensors 4330 may be provided and mounted on one surface of the board 7000 together with the third driving coil 4320 to face at least one of the magnets included in the third driving magnet 4310.

[0166] The third position sensor 4330 may be a magnetic sensor that detects a position (movement amount) of the third driving magnet 4310 by detecting a change in magnetic flux. In an embodiment, the third position sensor 4330 may face a neutral region of the third driving magnet 4310 and effectively detect a change in magnetic flux.

[0167] The third drive unit 4300 may include a third magnetic yoke 4340 disposed on the back side of the third drive coil 4320. That is, the third magnetic yoke 4340 may be disposed on a surface of the plate 7000 opposite to one surface on which the third drive coil 4320 is mounted. The third magnetic yoke 4340 may include a magnetic material and may focus the magnetic lines of force generated in the third drive magnet 4310. Therefore, the magnetic lines of force generated in the third drive magnet 4310 may pass through the third drive coil 4320 more strongly.

[0168] As described above, according to the embodiments of the present disclosure, the camera module can improve its structural reliability against external impacts, thereby ensuring improved optical image stabilization performance.

[0169] Furthermore, according to the present embodiment, the camera module can reduce noise generated when the camera module is impacted or driven.

[0170] Although specific examples have been shown and described above, it will be apparent after understanding this disclosure that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be understood in a descriptive sense only and not for purposes of limitation. The description of features or aspects in each example should be considered applicable to similar features or aspects in other examples. Appropriate results may still be achieved if the described techniques are performed in a different order, and / or if components in the described systems, architectures, devices, or circuits are combined in different ways and / or replaced or supplemented by other components or their equivalents. Therefore, the scope of this disclosure is not limited by the specific embodiments, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents should be understood to be included in this disclosure.

Claims

1. Reflection module, including: a reflective member configured to convert an incident light path; a bracket on which the reflecting member is disposed, and the bracket is configured to rotate about a first rotation axis and a second rotation axis perpendicular to the first rotation axis; a housing for accommodating the bracket; a first auxiliary member coupled to the bracket, the first auxiliary member including a frame and a plurality of buffer members provided on the frame; as well as a driving unit configured to generate a driving force for rotating the bracket, The frame includes an inclined portion having at least a portion extending obliquely with respect to the first rotation axis or the second rotation axis.

2. The reflection module according to claim 1, wherein: The plurality of buffer members include: a first buffer member provided on the inclined portion; and The second buffer member is spaced apart from the first buffer member.

3. The reflection module according to claim 2, wherein: The second buffer member is spaced apart from the first buffer member in a second rotation axis direction.

4. The reflection module according to claim 2, wherein: Each of the first and second buffer members includes a portion facing the housing, and At least a portion of the portion facing the housing has a curved profile.

5. The reflection module according to claim 2, wherein: Each of the first and second cushioning members includes one or more damping holes passing therethrough in a thickness direction.

6. The reflection module according to claim 2, wherein: The first buffer member protrudes toward a side surface of the housing such that a distance between the housing and the first buffer member is closer than a distance between the housing and the bracket.

7. The reflection module according to claim 2, wherein: The second buffer member protrudes toward a bottom surface of the housing such that a distance between the housing and the second buffer member is closer than a distance between the housing and the bracket.

8. The reflection module according to claim 1, wherein: The bracket comprises: a reflective bracket mounted together with the reflective member and configured to rotate about the first rotation axis; and a rotating support supporting the reflecting support and configured to rotate about the second rotation axis, and Wherein, the first auxiliary member is coupled to the rotating bracket to surround a portion of the reflecting bracket.

9. The reflection module according to claim 8, wherein: The reflective bracket includes a protrusion extending in the direction of the first rotation axis, and The first auxiliary member surrounds the protrusion.

10. The reflection module according to claim 9, wherein: The first auxiliary member is configured so that at least a portion of the inclined portion faces the protrusion, and A portion of the protrusion facing the first auxiliary member extends parallel to the inclined portion.

11. The reflection module according to claim 8, wherein: The first auxiliary member is coupled to the rotating bracket to be spaced apart from the housing and the reflecting bracket.

12. Camera module, including: case; a reflection module, disposed in the housing and comprising a reflection member; a lens module disposed in the housing and comprising a lens barrel and at least one lens accommodated in the lens barrel; as well as a first auxiliary member, provided on at least one side of the reflection module, and comprising a frame and a plurality of buffer members provided on the frame, The frame has an inclined portion to which at least one of the plurality of buffer members is coupled.

13. The camera module according to claim 12, wherein: The reflection module further includes a bracket installed together with the reflection member and configured to rotate around a first rotation axis and a second rotation axis perpendicular to the first rotation axis, and Wherein, the first auxiliary member is coupled to the bracket.

14. The camera module according to claim 12, wherein: The plurality of buffer members include: a first buffer member provided on the inclined portion; and The second buffer member is spaced apart from the first buffer member.

15. The camera module according to claim 12, wherein: At least a portion of the plurality of cushioning members has a curved profile.

16. The camera module according to claim 12, wherein: The plurality of buffer members include one or more damping holes passing therethrough in a thickness direction.

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